Civil engineering Fibertex Geotextiles

Transcription

1 C O N S T R U C T I O N Civil engineering

2 C O N S T R Constructing with Fibertex offers a full range of nonwoven geotextiles designed for use in many different foundation structures within civil engineering works. The most common applications are: Road works Construction works Ground systems Drainage and filtration systems Hydraulic works Waste disposals (landfills) Fibertex technology Fibertex manufactures nonwoven geotextiles using the drylaid needlepunch technology. Virgin polypropylene fibres are extruded, carded and finally needlepunched. Furthermore, many product types have thermal treatment added (e.g. IR bonding, hot air bonding or calendaring). Superior 3-dimensional geotextile are unique due to a combination of intensive needling and various bonding processes. After being laid out horizontally the intensive needling ensures that the fibres are fixed vertically. The result is a strong and flexible 3-dimensional product which is advantageous in all parameters related to geotextiles. High performance Fibertex Geotextiles The drylaid needlepunch technology ensures high quality geotextiles with: High strength and high elongation = high energy absoption Excellent resistance to installation damage = high puncture resistance Long-term wearing properties = more than 25 years of service life Unique hydraulic properties = controlled high water flow Excellent abrasion properties = no surface abrasion High uniformity = ensured by production technique and quality control No delamination = fibres interlocked in all 3 dimensions All are UV-stabilised, resistant to acids and alkalis, and cannot be attacked by fungi or rot. No chemical binders are used in the product or in the production process, and polypropylene is a polymer material which turns into carbon dioxide and water vapour when incinerated - both completely harmless substances. Advantages of using Fibertex geotextiles More than 100 punches per cm 2 Machine direction When using geotextiles between different construction layers, mixing of the layers is avoided, resulting in an increase of bearing capacity and thereby also time and material savings. High water flow and good filter properties combined with the necessary mechanical properties of the geotextile ensure that fine-grained particles are retained, while free movement of water is maintained. Consequently, stability is improved and life of the entire construction is prolonged. 2

3 U C T I O N Designing with Source: Palm Island, Dubai. Installation of Fibertex F-650M. The Fibertex Geotextile will be covered completely with gravel and sand. The importance of quality Fibertex s quality management system is certified in accordance with the most comprehensive standards set by the International Organisation for Standardisation EN ISO 9001:2008. This means that the quality management system has been implemented and verified at all levels within the organisation. are CE marked under the EU Construction Products Directive. CE marking certifies that Fibertex s quality management system (EN ISO 9001:2008) complies with the EN standards (level 2+). are submitted to production control and external testing by accredited test institutes in accordance with the EN standards. Fibertex was among the first in the nonwoven industry to obtain the ISO environmental management system certificate. Fibertex's environmental policy is to develop, produce and supply environmentally responsible products. To reduce consumption of energy and raw materials and generation of waste are main focus areas CPR-1846 Designing with Fibertex geotextiles Fibertex offers design specifications according to function. The functions of geotextiles are divided into five categories: Separation, Filtration, Drainage, Protection and Reinforcement. Regardless of type of construction, the geotextile performs at least one of these functions. For detailed design specifications, consult our Fibertex Design Guide. For design specifications for the function, Stress relieving (Paving fabric), see Fibertex AM-2 for Stress relieving. The design specifications and technical data are available on or by contacting your local Fibertex representative. 3

4 C O N S T R Functions Separation The durability and mechanical properties of make them ideal for separating layers in construction works. A strong and flexible Fibertex Geotextile is placed between the different layers in the construction preventing migration and mingling of materials, yet allowing free movement of water. This increases the bearing capacity and provides long-term stability of the foundation layers. Filtration The pore structure of Fibertex Geotextiles is designed to retain particles while allowing free movement of water, making it possible to separate two layers during intense hydraulic activity. Migration of layers, which would reduce the load-bearing capacity of the system, is thereby avoided and at the same time water flow is maintained with minimum pressure loss. Drainage The hydraulic properties of Fibertex Geotextiles is designed to drain excess water off the construction - not by passing through the fabric - but by flowing in the plane of the fabric away from the construction. The use of a drainage geotextile ensures an ongoing drainage of fluids with minimum pressure loss. 4

5 U C T I O N Protection The excellent static puncture resistance of makes them ideal for protecting waterproof membranes and other sealing materials from puncture when fill material and/or loads are applied. When placed between sealing material and other layers, the geotextile withstands and distributes any local pressure from the layer above, ensuring that the protected material is not stressed to failure. Reinforcement Together with woven and geogrid, the mechanical and hydraulic properties of Fibertex Geotextiles make the product ideal for reinforcing slopes and other earthworks. Reinforcement which incorporates the correct type of Fibertex Geotextile will prevent the collapse of vertical earthworks and steep slopes. Stress relieving Fibertex offers a flexible precompressed nonwoven designed especially for stress relieving. The stress relieving paving fabric is ideal in both new road constructions and in road maintenance, as it absorbs differential movements in the road layers, preventing reflective cracking. The bitumen-saturated paving fabric also forms a waterproof interlayer, protecting the subsoil from water intrusion and thereby loss of bearing capacity. 5

6 C O N S T R Road works Construction Ground systems Permanent Roads By separating the different layers of materials, Fibertex Geotextiles stabilise road constructions that are designed to resist dynamic and static stresses. Foundations When placed under foundations, Fibertex Geotextiles replace the blinding layer. It is simple, effective and economical. Pipes and Trenches Placing a Fibertex Geotextile on the bottom of the trench increases the bearing capacity considerably. Temporary roads Parking Areas Road Widening placed below the top gravel layer increase the bearing capacity of the road to withstand continuous heavy traffic loads. No cars, tractors or other vehicles will become stuck in the gravel. Areas subject to considerable static loads require a stable bearing course. provide this by separating the different layers of materials, which is essential to maintain the bearing capacity. ensure separation and stability between subsoil and added road building materials. Concrete Floors Below concrete floors, the permeable Fibertex Geotextile protects the drainage layer from contamination from the concrete and the subsoil. Impact Sound Suppression Roofs In apartment buildings, Fibertex Geotextiles are used for sound suppression purposes. are used as sliding layer, mechanical protection of roof membranes and as filter protection of any drainage layers. Storage Areas Using Fibertex Geotextiles prevents mingling or loss of fines in the bearing courses as well as clogging of the drainage layer. Storage Areas with AM-2 Sport Grounds Bitumen-saturated Fibertex AM-2 absorbs the stresses from cracks or joints in the old surface, preventing reflection through Densiphalt composite wearing courses. Grass fields, cinders and gravel courts/ grounds are stabilised with Fibertex Geotextiles due to the effective drainage, ensuring an even surface. Asphalt Maintenance Airports Bitumen-saturated Fibertex AM-2 prevents surface water from penetrating the bearing course, preventing washing out of fines and reducing the occurrence of fissures and cracks considerably. In constructions with heavy demands on the surface, Fibertex Geotextiles stabilise the foundations enabling them to withstand dynamic loads. Roof Gardens are used as separation layer, mechanical protection of roof membranes and as filter protection of any drainage layer. Slopes With Fibertex Geotextiles under the top layer, the slope will withstand subsoil water, rainwater and water from melted snow which would, otherwise, wash out the fines. 6 Railways The rapidly increasing speed and weight of trains place heavy demands on the bearing course. Fibertex Geotextiles stabilise the foundation, enabling it to withstand dynamic loads.

7 U C T I O N Drainage/Filtration Hydraulic works Waste disposal Drainage Pipes Drainage Trenches With permeable wrapped around the pipes, an effective and long lasting drainage system is ensured, without any risk of clogging. protect the drain system by preventing mingling of fines. Coastal Protection Dams protect the coast line as their flexibility and permeability ensure withstanding of the impact of waves and currents, preventing erosion and washing out of fines. Artificial dams and embankments need to be fortified with strong materials to resist the forces of nature. Fibertex Geotextiles stabilise and prevent washing out of fines. Waste Disposal (Top Layers) In supervised waste disposal sites, Fibertex Geotextiles on both sides of the membranes protect them from perforation. Furthermore, are used as filter protection of the drainage layers. Waste Disposal (Bottom Layers) As descriped above, on both sides of membranes protect them from perforation. also help to detect leaks. Surface Drains Harbour Constructions Water Purification Systems Building Drains Surface drains are likely to become silted up from the surrounding soil. keep the fines separated from the drainage layer ensuring the effectiveness of the drain system. River Banks and Canals placed behind the retaining wall keep the drainage layer clean which relieves the hydraulic pressure on the wall. When placed in front of the retaining wall, prevent washing out of the sea bed. on both sides of the waterproof membrane protect the system against perforation. In the construction of foundations and basement walls, ensure a clean and effective circumferential drain, which e.g. prevents damage caused by dampness. Artificial Lakes protect river banks and canals in an effective and environmentally friendly way. The waterproof membrane is protected against perforation with. Water Reservoirs protect the waterproof membrane against perforation. 7

8 C O N S T R U C T I O N USA France Denmark Czech Republic South Africa Facts about Fibertex Fibertex Nonwovens A/S is a market leading manufacturer of needlepunch nonwovens for industrial and technical applications. With corporate office in Aalborg, Denmark, and manufacturing sites in Denmark, the Czech Republic, France, the USA and South Africa Fibertex is globally represented. Since its foundation in 1968, Fibertex has continuously expanded and today manufactures nonwovens for customers all over the world for many different applications. Close to our customers Our goal is to be local on the global market. Sales staff, subsidiaries and distribution network play a decisive role in helping us to achieve this. Worldwide technical service is offered close to you. Find inspiration on Visit our website for more information. Under the business area Geotextiles you will find detailed information about our products, data sheets and brochures for download as well as contact information. The information given in this publication is of an illustrative nature. The manner of use is the sole responsibility of the user and the user must assume all risk and liability in connection herewith CPR-1846 B10 MARKETING A/S EN/ Fibertex Nonwovens A/S Svendborgvej 16 DK-9220 Aalborg Denmark Tel Fax fibertex@fibertex.com